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Species Dichomeris marginella - Juniper Webworm - Hodges#2282

Dichomeria marginella - Dichomeris marginella Dichomeris marginella – Juniper Webworm Moth - Dichomeris marginella Dichomeris marginella - Juniper Webworm - Dichomeris marginella Juniper Webworm Moth? - Dichomeris marginella Pennsylvania Moth - Dichomeris marginella juniper webworm - Dichomeris marginella Juniper Webworm - Dichomeris marginella Dichomeris marginella
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Gelechioidea (Twirler Moths and kin)
Family Gelechiidae (Twirler Moths)
Subfamily Dichomeridinae
Genus Dichomeris
Species marginella (Juniper Webworm - Hodges#2282)
Hodges Number
Explanation of Names
Dichomeris marginella (Fabricius, 1781)
Alucita marginella Fabricius, 1781
Ypsolophus marginella
* phylogentic sequence #070100
Forewing length 5.5-8 mm. (1)
Larva to 14 mm (Weiss & Lott, 1922).
Pupa about 5.5 mm (Weiss & Lott, 1922).
Larva - head dark reddish, body light brown with somewhat broken longitudinal stripes; median stripe reddish brown, submedian stripes whitish, sublateral dark brown, lateral stripes light reddish brown.
Introduced from Europe several times. There have been adventive colonies in the Northeast, Midwest, and British Columbia south through California. (1), (2)
Adults are present during June and July.(3)
Pupation occurs from mid May to early June.(3)
Ornamental Junipers. (1)
Life Cycle
Eggs are laid singly on terminal needles. Newly hatched larvae mine in the needles and later feed gregariously in webs. Pupation occurs in a silken web of tied needles (Weiss & Lott, 1922).
Overwinter as larvae.(3)
Print References
Beadle, D. & S. Leckie 2012. Peterson Field Guide to Moths of Northeastern North America. Houghton Mifflin. p.66-67 (preview) (4)
Fabricius, J.C. 1781. Species insectorum 2: 307
Hodges, R.W. 1986. Moths of America North of Mexico, Fascicle 7.1, p.46; pl.1.14 (5)
Powell, J.A. & P.A. Opler 2009. Moths of Western North America. University of California Press. p.102, pl.10.37m (1)
Weiss, H.B. & R.B. Lott 1922. The Juniper Webworm, Ypsolophus marginella Fabr. (Lepid., Gelechiidae). Entomological news, and proceedings of the Entomological Section of the Academy of Natural Sciences of Philadelphia 33(3): 80-82
Internet References
Works Cited
1.Moths of Western North America
Powell and Opler. 2009. UC Press.
2.A List of the Lepidoptera of Maine. Part 2, The Microlepidoptera. Section 1 & 2
Auburn E. Brower. 1984. Maine Agricultural Experiment Station Technical Bulletin 114: 1-70.
3.Eastern Forest Insects
Whiteford L. Baker. 1972. U.S. Department of Agriculture · Forest Service.
4.Peterson Field Guide to Moths of Northeastern North America
David Beadle and Seabrooke Leckie. 2012. Houghton Mifflin.
5.The Moths of America North of Mexico: Fascicle 7.1, Revision of North American Gelechiidae family and...
Hodges, R. W. 1986. The Wedge Entomological Research Foundation.